Fluid-regulator



P. CATUCCI AND L. D. NADEL.

FLUID REGULATOR.

APPLICATION FILED NOV. 20, 1918.

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2 8. m 7 QB 4 m O 1 1 we UNITED STATES ILINY CA'IUCCI AND LOUIS D. NADEL, OF NEVTARK, NEW JERSEY PATENT OFFICE.

, ASSIG-NORS, BY

MESNE ASSIGNMENTS, TO HARRIIYIAN NATIONAL BANK OF THE CITY OF NEW YORK, TRUSTEE.

FLUID-RE GULATOR.

Specification of Letters Patent.

Patented Aug. 24, 1920.

Original application filed November 20, 1918, Serial No, 263,301. Divided in part and this application filed November 20, 1918. Serial No. 263,302.

To all whom it may concern:

Be it known that we, PLINY CATUooi, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, and LOUIS D. NADEL, a citizen of the United States, and a resident of Newark, county of Essex, and State of New Jersey, have invented a certain new and useful Fluid-Regulator, of which the following is a specification.

The invention relates to the regulation of fluids under pressure, and more particularly to devices whereby the flow and pressure of the fluid will be automatically regulated by the work performed by the move ment of the fluid. The invention comprises a device wherein the "motive power is a fluid and in which a plurality of parts movable at different rates of speed are acted on by the fluid and wherein the rate of speed of each movable element is automatically regulated and the speed of one element is maintained at a definite ratio to the speed of the other.

The objects of the invention are to produce a device which is simple in construction, positive and accurate in operation,

which will not easily get out of order, and

which is capable of fine adjustment.

A further object of the invention is the provision of means of the character herein described, which are simple in operation and construction, and thoroughly reliable and etficient in its purpose and operation.

lVitli these and other objects in view to be more fully set forth hereinafter, the in vention consists in the novel construction, combination of elements, and arrangement of parts which will be exemplified in the operation and construction hereinafter scribed in the specification and illustrated in the accompanying drawings considered together or separately.

The inventive idea involved is capable of receiving a variety of mechanical expressions,.one of which for the purpose of illustrating the invention, is shown in the accompanying drawings.

The invention will be first described in connection with the accompanying drawings, illustrating one embodiment of the invention, wherein similar reference characters are used to designate corresponding parts throughout the several views, and then more specifically defined and indicated in the appended claims.

In the drawings,

Figure l is a plan view partly in horiaontal section of the device, the section being taken on the line indicated by 11 of Fig. 2;

Fig. 2 is a longitudinal section on the line 22 of Fig. 1

Fig. 3 is a transverse section taken on the line 33 of Fig. 1; and

Fig. 4 is a side elevation partly in longitudinal section illustrating one application of the device.

The device is illustrated in connection with a tube bending apparatus which is the subject matter of a co-pending application for patent, filed on even date herewith, Serial No. 263,301, but it is to be understood that this application of the invention is merely illustrative, and the invention may be utilized in connection with other forms of apparatus.

In carrying out the embodiment of the 'avention illustrated, a cylinder 1 is provided. The cylinder is provided with an inlet port 2, and outlet ports 3 and 3. The port 2 is in communication, by means of a pipe 1 with the outlet end of a pump (not shown). The ports 3 and 3 are, by means of pipes 5 and 6, in communication with the device to be operated and through the medium of a pipe 7 with the inlet of the pump (not shown). Between the pipes 5 and 7 is a valve 8, and a similar valve 9 is interposed between the pipes 6 and 7.

The cylinder 1 is provided at each end with a stufling box 10, and a valve rod 11 extends through the center of the cylinder and projects through the stuffing boxes. The bore of the cylinder carries a lining 12 having a plurality of openings 12 communicating with the inlet port 2. Similar openings 13 connect with the port 3 and with openings 14: leading to the port 3.

The valve rod 11 has secured thereto a pair of valve pistons 16 and 17, which are spaced apart a distance approximately equal to the diameter of the inlet 2. The lengths of the valve pistons are such that when the rod 11 is in its normal position, the space between the pistons will be coincldent with the inlet 2 with the openings 12 at the cen ter of the space, and the outer ends of the,

pistons will partially mask the openings 13 and 1%. Each piston has a plurality ol -radially arranged longitudinal bores 18 eX tending therethrough whereby the fluid from the pump is distributed to both ends of the cylinder 1 and to each or both of the outlet ports 8 and 3 respectively.

One end ofthe rod 11 is provided with a hook 19 for the attachment of a Spring 20, which tends to move the pistons 16 and 17 to the left in Figs. land 2, and close the openings 1-3. An adjustable stop 13 on the rod 11 limits the movement to the left in order that the piston 17 will not close the openings 12 and cut off the supply of fluid tromthe inlet port 2. p

The end of the rod 11 opposite that carrying the hock 19 has secured thereto a yoke 21 which in turn carries a grooved pulley 22 over whirh extends a block link chain 23.

The yoke ismounted'on a'pair of guide rods 21 and is guided thereby. One end otthe chain 23 extends around a grooved pulley 24, and is secured thereto. The pulley 2.-l is mounted in bearings 1 in a base plate 25, which also supports the cylinder 1. The opposite end of the chain 23 extends arounf a g'roovedpulley 26 and is anchored there to. The diameter of the pulley 26 is con siderably greater than that of the pulley Secured to and rotatable with the pulley 26' is a grooved-pulley 27 to which is anchored a chain 28. The pulley 2. is of approximately the same diameter as the pulley Fast to the shaft 29 of the pulley and rotatable with said pulley is a double grooved pulley 30 of a diameter greater than that of the pulley 26 and very much greater than that of the pulleys 22, 2%, and-2?. A chain 31 is anchored in one of the grooves of the )ulle i 30 and extends around the oeriphery thereof in the direction opposite to that in which the chain 28 is wound on the pulley 27. A second chain 32 is anchoreril in the other groove of the pulley 30 and is wound thereon in the direction opposite to that oil the chain 3.1. It will be understood that instead ol the chains 23, 28, 31 and 32,

any other flexible connections may be emder 34; and said piston carries and forms part of a circular single acting cylinder 37.

connects the pipe 5 with said cylinder.

The forward or open end of the cylinder 37 carries a cross-head 5-38, to which the free end or" the chain 31 is secured, and which is connected by a member 39 with a cross-head 40. v The piston ll of the cylinder 3'? carries a cross-head 12, to which the free end of the chain 28 is secur d, and an elongated plunger l3.

A yoke 4:4: is pivoted to the cross-head 4&2, andlin'ks to are connected by a member @6. The long arm or" a bell-crank lever @l'l' pivoted at 48 is attached to the member 4:6. To the short arm of the bell-crank is attached a pair ofsprings 49 which are anchored above the device.

piston 36. The valves 8 and 9 are open and the fluid (oil, water,air or gas) will circulate i'r'om the pump,'through the openings 12, bores 18 of valve pistons 16 and 17, open- The extension forms the head of the. cylinder 34, and a passage 58 therethrough ings '13 and 1%, and pipes 5, 6, and 7, to the pump in a-closed circuit.

When the valves 8 and 9 are closed, the .eturn to the pumpis shut oil", and the fluid is forced through the upper extension of the pipes 5 and 6 to the cylinders 34 and 37. This will move both pistons 36 and 41 outward'at approximately the same speed. The

pull of the chain 28 will. rotate the pulleys 27 and 26 in the clockwise direction at a much higher rate of speed than the pulleys 30 and 2 1 are rotated. in the anti-clockwise direction bythe pull of the chain 31, and the tendency of the chain 23' to rotate with the pulley will be greater than that permitted by the rotation of the pulley due to the pull of the chain 3.1. The pulley 22 will therefore be moved bodily to the right toward the pulley 2%. This bodily movement of the pulley 22 will move the rod ll and pistons 16 and 17 to the right to reduce the openings 14 and increase the openings 13, whereby more fluid will be admitted to the cylinder 37 through the pipe 5 than will passto the cylinder 34- through the pipe 6. The speed of the piston-cylinder 36 37 will be. reduced and that of the piston ll increased until therelative speeds of travel of the pistons 36*37 and 41 are such that the pull of the chain 31 will rotate the pulley 24: in the anti-clockwise direction at the same rate of speed as the pull of the chain 28 will take up the chain 23. The longitudinal movement of the rod 11 will cease and the plunger will move forward at a much greater rate of speed than will the member 40, and will, when both elements have reached the limit of movement, have traveled to the extremity of the tube carried by the element 40.

WVhen the members 43 and 4:0 reach the desired limit of movement forward the valves 8 and 9 are opened. The fluid will circulate in a closed circuit as before described, the spring 4L9 will force the piston ilback into the cylinder 37 until the cross head 42 engages the cylinder when the piston 41 and cylinder-piston 36-37 will be moved back together to the positions shown in Fig. 1.

As the members 38 and 42- are moved back to the positions shown in Fig. 1, the spring 33 will cause the differential pulleys to be rotated in the opposite directions and restore the apparatus to the normal position.

In an apparatus of the proportions shown, the plunger travels at seven times the speed of the member A0 and the strokes of the pistons begin and end simultaneously.

It is to be understood that instead of employing a chain or cable form of apparatus for actuating the valve piston rod, any other form of differential mechanism may be employed.

In accordance with the provisions of the patent statutes, we have described the principle of our invention together with the apparatus which we now consider to represent the best embodiment thereof, but we desire it understood that our invention is not confined to the particular form of apparatus herein shown and described, the same being merely illustrative, and that the invention can be carried out in other ways with out departing from the spirit of our inven tion, and, therefore, we claim broadly the right to employ all equivalent instrumentalities coming within the scope of the appended claims, and by means of which objects of our invention are attained, and the few results accomplished, as herein set forth, as it is obvious that the particular embodiment herein shown and described is only one of many that can be employed to attain these objects and accomplish these results.

I Having now described our invention, what we claim and desire to secure by Letters Patent is as follows: 1. A fluid operated device havmg elements constructed and arranged to be moved at diflerent rates of speed, and means operated by the elements for regulating the movement of the elements.

2. A fluid operated device having elements constructed and arranged to be moved at different rates of speed, and differential means operated by the elements for regulating the movement of the elements.

3. A fluid operated device having elements constructed and arranged to be moved at different rates of speed, and means operated by the movement of the elements for regulating the movement of the elements.

4:. A fluid operated device having elements constructed and arranged to be moved at different rates of speed, and differential means operated by the movement of the elements for regulating the movement of the elements.

5. A fluid operated device having two movable elements constructed and arranged to be moved relatively to each other at different speeds, and means operated by the movements of the elements for regulating the movements of the elements.

6. A fluid operated device having two movable elements constructed and arranged to be moved relatively to each other at different speeds, and differential means operated by the movements of the elements for regulating the movements of the elements.

7. A fluid regulator, having a fluid inlet, and a plurality of fluid outlets, and a piston valve actuated by means actuated by the fluid passing through the outlets for regulating the egress of the fluid.

8. A fluid regulator, having a fluid inlet, and a plurality of fluid outlets, and a duplex piston valve actuated by means actuated by the fluid passing through the outlets for regulating the egress of the fluid.

9. A fluid regulator, comprising a cylinder, an inlet port, two outlet ports, a piston valve movable longitudinally of the cylinder, said. valve being adapted to vary the extent of said outlet openings, andmeans governed by the extent of the outlet openings for regulating the extent of said openings.

This specification signed and witnessed this 31st day of October, 1918.

PLINY GATUCCI.

' LOUIS D. NADEL.

lVitnesses JOHN L. LOTSCH, MORTIMER LANZIT. 

